Description

This TI Verified Design provides the theory: component selection: TINA-TI simulations: Verification & Measurement Performance: Altium Schematics: PCB Layout for a Phase Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation.  The design uses a 16-bit: 8-Channel: 500ksps SAR ADC: ADS8688 with integrated analog front-end circuit for ease of system hardware design.The design introduces the concept of phase and phase Compensation: compares the additional phase delay introduced between the input channels of a non-simultaneous sampling ADC with a simultaneous sampling ADC: and provides a optimal algorithm to compensate for the phase delay introduced in a non-simultaneous implementation.Measured results demonstrate how the phase compensation algorithm used in this design compensates for the additional phase delay introduced by a multiplexed ADC: resulting in an equivalent performing solution as compared to a simultaneous sampling ADC solution.